The ZeroNoise 6400005 is a 15 cm coiled adaptor with a female 4-pin Nexus socket at each end.
It joins two male Nexus plugs. The usual case is a ZeroNoise helmet kit with a male plug, such as the full face or open face headset, on an amplifier whose leads are also male. ZeroNoise catalogues it as a crossed-wiring adaptor, so the pins are arranged for exactly this join and a generic straight coupler will not do the same job.
The opposite case, two female sockets, takes the 6400004 male to male adaptor. To add length without changing gender, use the 150 cm extension.
What does this lead join?
A male Nexus plug to another male Nexus. The common use is a ZeroNoise helmet kit with a male plug on a ZeroNoise amplifier ordered with male leads. ZeroNoise wires it crossed for this job, so a generic coupler is not a substitute. Our ZeroNoise intercom compatibility guide shows every pairing.
My intercom crackles or cuts out. Is a new lead the fix?
Often, yes. Leads live a hard life being trodden on and trapped in doors, and a damaged lead is the most common cause of noise or dropouts. If a replacement does not cure it, talk to us before replacing the amplifier, as it may be a connector or helmet-kit fault instead.
